化学学报 ›› 1964, Vol. 30 ›› Issue (5): 488-491. 上一篇    下一篇

研究简报

砷的氢催化波

华惠珍, 黄薇文, 高小霞   

  1. 北京大学化学系
  • 投稿日期:1963-01-21 修回日期:1964-06-15 发布日期:2013-06-03

ON THE CATALYTIC HYDROGEN WAVE OF ARSENIC(Ⅲ)

HUA HUI-ZHEN, WANG WEI-VEN, KAO SHEAU-SHYA   

  1. Department of Chemistry, Peking University
  • Received:1963-01-21 Revised:1964-06-15 Published:2013-06-03

Хлопин[1]找出三价砷在钴盐、有机酸和支持电解质三者共存下有催化波。用此催化波于测定微量砷,可达10-6M三氧化砷。Евдокимов等[2]在相似条件下亦得砷的催化波。本文实黩证明有机酸不存在也能得到催化波,它是钴-砷络合物催化氢离子放电的氢波。在选定的条件下灵敏度可达4·10-7M砷。锑和钼也有相似的催化波。在酒石酸存在下和一定的pH范围内可避免锑和钼的干扰。

The catalytic hydrogen wave of arsenic(Ⅲ) in the presence of cobaltous salt has been investigated. Under optimum conditions (0.4 M Na2SO4,10-4M CoSO4,4.5×10-2 M tartaric acid, pH 3-4) the catalytic peak current may be used to determine arsenic as low as 4×10-7 M. Molybdenum and antimony do not interfere.